I can confirm @aptimpropriety's claim after having tested this in bidets in multiple countries. It doesn't matter how high you turn on the water pressure, if you grab a piece of toilet paper afterwards it seems to always find some... remainders.
Hand dryers are very efficient! They don't seem to do anything for the first ~20 seconds, but in the last 5 seconds you feel all the water evaporating. That's because only the water surface evaporates, until your skin is exposed dry. You are probably like most people who I see use them in public bathroom, using them only for <10 seconds.
After she passed, my Dad just threw them in the guest bathroom. Using both paper and these (preferred order is up to the user) seems to fit the bill for just about any, uh, circumstance, and I've had numerous people make positive comments on it which is strange in and of itself.
At first I thought it was a bit wasteful, but I think many times you can get by with less total paper. YTPMV.
With Bidets you may be correct because you have less water flow and also less control of the direction. A hand held bathroom bidet sprayer is so much better than a stand alone bidet and this is why:1. It's less expensive (potentially allot less) 2. You can install in yourself = no plumber expense 3. It works better by providing more control of where the water spray goes and a greater volume of water flow. 4. It requires no electricity and there are few things that can go wrong with it. 5. It doesn't take up any more space, many bathrooms don't have room for a stand alone bidet. 6. You don’t have to get up and move from the toilet to the bidet which can be rather awkward at times to say the least. Available at http://www.bathroomsprayers.com
When you dive into a mud pit, do you wipe yourself off with paper towels until you're done, or do you use a bit of soap & water?